JEE Main 2021PhysicsCapacitanceMediumMCQ

JEE Main 2021 — Capacitance Question with Solution

JEE Main 2021 (24 Feb Shift 1)

Question

Two equal capacitors are first connected in series and then in parallel. The ratio of the equivalent capacities in the two cases will be:

Choose an option

Show full solutionCorrect option: B
Correct answer
B1:4

Step-by-step explanation

For series combination,

1Ceq1=1C+1C⇒Ceq1=C2

For parallel combination,

Ceq2=C+C⇒Ceq2=2C

⇒Ceq1Ceq2=C/22C=14=1:4

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About this question

This is a previous-year question from JEE Main 2021, covering the Capacitance chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.